News Articles with Category: Energy Systems
September 30, 2014 – via University of Southern Denmark
Researchers have synthesized crystalline materials that can bind and store oxygen in high concentrations. Just one spoon of the substance is enough to absorb all the oxygen in a room. The stored oxygen can be released again when and where it is needed.
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September 11, 2014 – via University of California Riverside
The UCR scientists developed a new three-dimensional carbon nanotube porous foam. The large nanoscale pores on the foam’s surface ease the infiltration of electrolyte, while also allowing them to store energy much more densely than in other supercapacitor designs. The foam is made by depositing graphene and carbon nanotubes over a nickel substrate via chemical vapor, followed by a successive deposition of nanoparticles of hydrous ruthenium oxide (RuO2).
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August 22, 2014 – via University of Alberta
Hemp fibers are heated over the course of 24 hrs, causing the material’s carbon atoms to align and form nanosheets, each of which are only one carbon atom thick, and which can be used as conductors in batteries.
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August 20, 2014 – via IDTechEx
Graphene electrodes are one of the best prospects for enabling supercapacitors and superbatteries to take up to half of the lithium-ion battery market in 15 years – amounting to tens of billions of dollars yearly. They may also be key to supercapacitors taking much of the multibillion dollar aluminium electrolytic capacitor business. That would make supercapacitors and supercabatteries (notably in the form of lithium-ion capacitors) one of the largest applications for graphene.
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August 9, 2014 – via NASA
The proposals are intended to produce new power sources, such as the fuel cell used in this Scarab lunar rover
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May 20, 2014 – via Vanderbilt University
The new device that Pint and Westover has developed is a supercapacitor that stores electricity by assembling electrically charged ions on the surface of a porous material, instead of storing it in chemical reactions the way batteries do. As a result, supercaps can charge and discharge in minutes, instead of hours, and operate for millions of cycles, instead of thousands of cycles like batteries.
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May 17, 2014 – via Office of Naval Research
The “Persistent Renewable Energy for Undersea Systems (PREUS)” program is one of the more intriguing concepts begin considered by the Office of Naval Research. The PREUS program is developing generators that will be able to convert heat from geothermal vents on the ocean floor into electric power.
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January 30, 2014 – via NASA – JPL
The approach is based on phase-change material (PCM) which melts and expands at warmer temperature, and freezes and contracts at lower temperature. This material is placed in a container filled with hydraulic oil, so as the PCM expands, it pushes the oil out into another container, eventually reaching pressures as high as 3000 psi (about 21 MPa). A valve then opens and lets the pressurized oil go out, and the expelled oil turns a generator, which in turn charges a battery.
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January 27, 2014 – via International Center for Materials Nanoarchitectonics (MANA)
The bubble structure allows free movement of electrons throughout the network, meaning that the graphene retains full conductivity. Not only this, but the mechanical strength and elasticity of the 3D graphene is extraordinary robust- the team were able to compress it down to 80% of its original size with little loss of conductive properties or stability.
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January 22, 2014 – via NASA Tech Briefs
Potential uses include studying ocean climate change, pollution, salinity, and currents.
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November 12, 2013 – via MIT Technology Review
Built high-performance supercapacitors out of graphene that store almost as much energy as a lithium-ion battery, can charge and discharge in seconds and maintain all this over many tens of thousands of charging cycles.
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September 20, 2013 – via National geographic
Supercapacitors can boost or replace batteries in vehicles, storing energy as an electrical charge.
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September 10, 2013 – via Electro Standards Laboratories
Electro Standards Laboratories has developed a novel estimation methodology that can be used to evaluate the potential benefits of implementing hybrid battery-supercapacitor systems to improve battery life.
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August 28, 2013 – via Oak Ridge National Laboratory
Typically, most elements have a stable oxidation state, and they want to stay there. So far there aren’t many known materials in which atoms are easily convertible between different valence states. We’ve found a chemical substance that can reversibly change between phases at rather low temperatures without deteriorating
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April 26, 2013 – via Subsea World News
The WPT (Wireless Power Transfer) solution enables contactless recharging or powering of equipment in demanding offshore environments, avoiding wet mate/stab connections at depth and reducing electrical failure.
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April 14, 2013 – via UCLA
Discovery could provide rapid power to small devices, large industrial equipment
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October 12, 2012 – via Phys.org
Sponge-like graphene, which can be used as electrodes in supercapacitors with ultrahigh power density and relatively good energy density.
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October 8, 2012 – via EcoSeed
supercapacitors have the potential to be a big player in the search for reliable green energy across the world, especially for transportation
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August 5, 2012 – via Military and Aerospace Electronics
Hamilton Sundstrand researchers will concentrate on demonstrating energy-dense proton exchange membrane fuel cell (PEMFC)-based air-independent propulsion for a future generation of large, long-endurance surveillance UUVs.
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August 3, 2012 – via Military and Aerospace Electronics
ONR has awarded General Atomics a potential $20 million contract to develop energy section technology for the Navy’s Large Displacement Unmanned Underwater Vehicle Innovative Naval Prototype (LDUUV INP) program.
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August 3, 2012 – via Inside the Navy
An analysis of alternatives is ongoing for the LDUUV, as the Navy seeks to field a UUV that can handle bigger payloads while trying to solve the problem of how to power the vehicle in the most efficient way.
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July 26, 2012 – via Global Newswire
The SOFC fuel cell stack is based on the technology developed by Versa Power Systems, an SOFC developer that is partially owned by FuelCell Energy. Other team partners include the Energy Systems Division of NASA’s Lyndon B. Johnson Space Center, Yardney Technical Products, Inc., Naval Underwater Warfare Center (NUWC), and Pacific Northwest National Laboratory (PNNL).
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July 20, 2012 – via Fed
Large Displacement Unmanned Underwater Vehicle Innovative Naval Prototype(LDUUV INP Energy Section Technology Base IDIQ Contract
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July 2, 2012 – via Aviation Week
One key advantage of unmanned vehicles is that their persistence is not limited by the human operator. This also means their size is set by the payloads and sensors that they carry, not by the need to accommodate a pilot or crew. But in many cases, this now means that unmanned systems run into an energy limit, both in terms of endurance and their ability to deliver power to radars, lasers and communications links.
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June 7, 2012 – via Naval Research Laboratory
High-quality gallium indium phosphide (GaInP) cells are well suited for underwater operation. GaInP cells have high quantum efficiency in wavelengths between 400 and 700 nanometers (visible light) and intrinsically low dark current, which is critical for high efficiency in lowlight conditions.
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June 4, 2012 – via Military and Aerospace Electronics
There’s suddenly a lot of exciting work going on in unmanned underwater vehicles, or UUVs for short. One of the most influential research organizations pushing UUV technology forward is the Office of Naval Research, or ONR, in Arlington, Va.
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June 1, 2012 – via ARS Technica
Yi Cui and Zhenan Bao of Stanford University have made a hydrogel (water-based gel) using a conducting polymer. When used as electrodes in a supercapacitor, the new material has a capacitance about three times greater than a typical carbon supercapacitor. It’s also cheap to build and operate.
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May 31, 2012 – via Business First
NexTech Materials Ltd. is developing a system that uses rocket missile fuel, oxygen and a fuel cell in a space the size of a torpedo tube to power the vehicles.
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May 30, 2012 – via Military and Aerospace Electronics
The U.S. Office of Naval Research (ONR) in Arlington, Va., are asking engineers at Lynntech Inc. in College Station, Texas, to develop a prototype propulsion and power system for a future long-endurance UUV under terms of an $18 million contract awarded earlier this month.
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May 4, 2012 – via IDTechEX
This article shares some of the research carried out for the new IDTechEx report, Electrochemical Double Layer Capacitors 2013-2023.
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March 19, 2012 – via Wired
It’s been the Navy’s dream for years: undersea drones that can swim entire oceans. But it’s been thwarted by science’s inability to build propulsion and fuel systems for a journey of that length.
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February 27, 2012 – via Boulder County Business Report
API Engineering will use the grant to continue research and development work on oxygen generation technology for fuels cells that can be used underwater.
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January 11, 2012 – via The Environmental Blog
It holds four very important capabilities and attributes that could force the development of new electric energy technologies that would no longer be too dependent on batteries alone.
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January 10, 2012 – via Stuff.co.nz
A Microbial Fuel Cell (MFC) harnesses the electrical activity of microbes as they feed on the organic mix coming from the stomach. The electricity produced – quite miniscule at present – is collected by the MFC and used to charge the robot.
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January 9, 2012 – via Defense News
In this case, the grail is an unmanned submarine smart enough to sense and avoid obstructions, powerful enough to stay out on months-long missions without detection, and cool enough to keep computers from overheating. Those are among the challenges facing the companies and universities vying to provide ideas to the U.S. Navy about how to power and autonomously navigate a Large Displacement Unmanned Undersea Vehicle (LDUUV), a development project led by the U.S. Office of Naval Research (ONR).
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January 9, 2012 – via TPM Idea Lab
The Office of Naval Research has been exploring the use of microbes in fuel cells for a number of years, primarily for sensing equipment used to monitor ocean environments.
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December 1, 2011 – via Maritime Propulsion
In an attempt to improve the range of UUVs, the alternative energy company AlumiFuel Power
Inc, (API) researching on behalf of the US Navy, into possible use of hydrogen generation
using steam and aluminum
.
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November 29, 2011 – via Drexel University
In a piece published in the November 18 edition of Science, Gogotsi, who is the head of the A.J. Drexel Nanotechnology Institute, calls for a new, standardized gauge of performance measurement for energy storage devices that are as small as those used in cell phones to as large as those used in the national energy grid.
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September 7, 2011 – via Nanowerk News
A pulse supercapacitor is an “Energy storage” component with high capacitance and low internal resistance (ESR) that unlike a battery is built to deliver pulses of current almost endlessly (hundreds of thousands of charge/discharge cycles) and can be calmly recharged by a battery during the standby time between the pulses. Hybrids of Battery and SC are coming more and more popular and recognized by the engineers.
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August 18, 2011 – via AUVSI
The US Navy says it will invest heavily to produce ship-safe, long-endurance power for its unmanned underwater vehicles that will allow multi-week missions
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August 4, 2011 – via ONR
The Office of Naval Research (ONR) is interested in receiving proposals for an energy dense air-independent, rechargeable/refuelable energy system for the Large Displacement Unmanned Underwater Vehicle Innovative Naval Prototype (LD UUV INP).
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May 12, 2011 – via Raytheon
Raytheon engineers are addressing the need for an alternative power source through the use of external combustion engines and monopropellant fuels. The team investigated a number of engine types. Particularly promising technologies included a modified Rankine cycle engine developed by Cyclone Power Technologies, Inc.
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February 16, 2011 – via Cyclone Power Technology
The tests verified by Raytheon demonstrated that Cyclone’s prototype, water-cooled Stingray engine achieved thermal efficiencies over 30%. Applied to a large diameter unmanned undersea vehicle, such efficiency yields double current payload capacities and triple the current mission times.
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October 5, 2010 – via Rice University
New research by Rice University scientists suggests that a class of material known as metallacarborane could store hydrogen at or better than benchmarks set by the United States Department of Energy (DOE) Hydrogen Program for 2015.
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